B3311331313231311331322331333132313233313231333131323133313232233132313222311   >>    B331133131323131133132233133313231323331323133313132313331323223313231322231   <<    B3311331313231311331322331333132313233313231333131323133313232233132313222313   >>      B3311331313231311331322331333132313233313231333131323133313232233132313222312   >>